New Orleans officials say West Nile virus has been detected in mosquitoes collected in the city.
No human West Nile cases have been reported in New Orleans so far this year, although one human case has been reported in St. Bernard Parish.
Most people infected do not get sick. However some develop flu-like symptoms and a few will develop serious illness.
A Thursday news release says the New Orleans Mosquito Control Board has increased spraying for mosquitoes and is issuing the familiar warnings to residents. People are urged to use mosquito repellents, keep screens on doors and windows in good repair, and eliminate places where water collects, allowing mosquitoes to breed.